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<title><![CDATA[iFixit - Answers With Device &quot;HP ProBook&quot;]]></title>
<link>https://it.ifixit.com/Risposte/Device/HP_ProBook?rss=yes</link>
<description><![CDATA[Top Questions according to your query. Only showing &quot;HP ProBook&quot; questions.]]></description>
<language>en-US</language>
<pubDate>Tue, 25 Aug 2026 19:09:09 -0700</pubDate>
<item>
<title><![CDATA[HP ProBook 440 G8: Salve, è possibile sostituire la tastiera retroilluminata?]]></title>
<description><![CDATA[<p>sono in possesso di un HP 440 G8 è possibile sostituire la tastiera retroilluminata?</p>

<p>⟐ Answered novembre 23, 2024 at 9:46 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/858988/Salve,+%C3%A8+possibile+sostituire+la+tastiera+retroilluminata</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/858988</guid>
<pubDate>Sat, 23 Nov 2024 09:46:14 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP ProBook 450 Series: HP ProBook 450 G5 non si avvia – schermo nero, ventola intermittente e]]></title>
<description><![CDATA[<p>Ciao a tutti,</p>

<p>sto cercando di diagnosticare un problema su un <strong>HP ProBook 450 G5</strong> che non riesce più ad avviarsi.</p>

<div class="clearer"></div><div class="headerContainer"><h3 id="Section_Sintomi" class="header">Sintomi</h3></div>

<p>Il comportamento è il seguente:</p>

<ul><li>Il portatile è completamente spento.</li><li>Appena collego l’alimentatore, anche senza premere il pulsante di accensione, inizia a comportarsi in modo anomalo.</li><li>La ventola gira per alcuni secondi e poi si ferma.</li><li>Poco dopo riparte e poi si ferma nuovamente.</li><li>Dopo alcuni di questi cicli, si sente un beep.</li><li>La ventola riparte e il comportamento ventola/beep continua ad alternarsi.</li><li>Dopo un po’ tutto si ferma.</li><li>Il computer non completa mai l’avvio.</li><li>Lo schermo rimane completamente nero, senza logo HP, schermata BIOS o retroilluminazione visibile.</li><li>Sembra quindi che non riesca nemmeno ad arrivare alla fase di POST.</li></ul>

<p>Dato che non posso caricare direttamente un video sul forum, ho caricato un video del problema su YouTube.</p>

<p><strong>Video YouTube:</strong><br /><a href="https://www.youtube.com/watch?v=8TXB2VV9goU" title="https://www.youtube.com/watch?v=8TXB2VV9goU" target="_blank">https://www.youtube.com/watch?v=8TXB2VV9...</a></p>

<p>Nel video si possono vedere chiaramente la ventola che parte e si ferma, il comportamento degli eventuali LED diagnostici e si può sentire la sequenza di beep.</p>

<p>Mi sarebbe molto utile se qualcuno potesse guardare il video e dirmi se la sequenza di beep/LED corrisponde a uno specifico codice diagnostico HP.</p>

<div class="clearer"></div><div class="headerContainer"><h3 id="Section_Prove_gi_effettuate" class="header">Prove già effettuate</h3></div>

<p>Inizialmente sospettavo un problema alla RAM.</p>

<p>Ho quindi:</p>

<ul><li>rimosso la RAM originale;</li><li>acquistato due nuovi moduli DDR4 SO-DIMM compatibili;</li><li>installato i nuovi moduli nei due slot disponibili.</li></ul>

<p>Purtroppo il comportamento non è cambiato: il portatile continua ad avere lo schermo nero, la ventola parte e si ferma ripetutamente e la sequenza di beep/LED è ancora presente.</p>

<p>Qualcuno riconosce questo comportamento o sa indicarmi cosa dovrei controllare come prossimo passo per arrivare a una diagnosi più precisa?</p>

<p>Qualsiasi aiuto nell’interpretare la sequenza di beep/LED mostrata nel video YouTube sarebbe molto apprezzato.</p>

<p>Grazie!</p>

<p>⟐ Commented agosto 24, 2026 at 7:53 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/969104/HP+ProBook+450+G5+non+si+avvia+%E2%80%93+schermo+nero,+ventola+intermittente+e</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/969104</guid>
<pubDate>Mon, 24 Aug 2026 07:53:27 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP ProBook: Mentre il pc è in carica la luce gialla lampeggia ma non carica]]></title>
<description><![CDATA[<p>Salve,</p>

<p>sono in possesso di un pc portatile HP Probook modello 455 G9, mentre il pc è spento e lo ricarico la spia, di colore giallo, lampeggia (quando funzionava regolarmente era fissa) e carica molto lentamente fino ad un giorno per arrivare al 90%, mentre quando il pc è acceso la spia rimane sempre gialla e non ricarica, anzi diminuisce la percentuale della batteria (prima la spia a pc acceso era di colore bianco).</p>

<p>La tensione dell'alimentatore è a 19 V.</p>

<p>Qual'è il problema?</p>

<p>Grazie.</p>

<p>⟐ Commented agosto 19, 2026 at 12:08 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/965837/Mentre+il+pc+%C3%A8+in+carica+la+luce+gialla+lampeggia+ma+non+carica</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/965837</guid>
<pubDate>Wed, 19 Aug 2026 12:08:18 -0700</pubDate>
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<item>
<title><![CDATA[HP ProBook 430 G8: bios bloccato password dimenticata]]></title>
<description><![CDATA[<p>buongiorno ho bloccato il mio probook 430 g8 perche chi lo usava si e dimenticata la password e quindi non riesco piu ad accenderlo.</p>

<p>potete aiutarmi???????</p>

<p>⟐ Answered novembre 12, 2025 at 14:45 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/922941/bios+bloccato+password+dimenticata</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/922941</guid>
<pubDate>Wed, 12 Nov 2025 14:45:36 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP ProBook 430 G2: Perchè il mio monitor non si accende?]]></title>
<description><![CDATA[<p>Il pc, se collegato con un hdmi, fa vedere il monitor in caso contrario si accende ma lo schermo è nero.</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/922927/Perch%C3%A8+il+mio+monitor+non+si+accende</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/922927</guid>
<pubDate>Wed, 22 Oct 2025 03:46:28 -0700</pubDate>
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<item>
<title><![CDATA[HP ProBook: Charger light blinks when plugged in but won't power on]]></title>
<description><![CDATA[<p>I have a HP ProBook 6440b that won’t turn on. The charger LED blinks but the laptop will not turn on with or without the battery. I’m sure the battery is completely dead, but I don’t think that would prevent it from powering on. Does anyone know how to fix this?</p>

<p>⟐ Commented luglio 07, 2026 at 2:01 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/723690/Charger+light+blinks+when+plugged+in+but+won&#039;t+power+on</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/723690</guid>
<pubDate>Tue, 07 Jul 2026 02:01:09 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP ProBook 4540s: How do I set up my fingerprint reader?]]></title>
<description><![CDATA[<p>I’m wanting to set up my fingerprint reader, but I’m not sure which tools to use. Is there a certain program I need?</p>

<p>⟐ Answer accepted novembre 08, 2016 at 15:33 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/351554/How+do+I+set+up+my+fingerprint+reader</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/351554</guid>
<pubDate>Tue, 08 Nov 2016 15:33:27 -0700</pubDate>
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<item>
<title><![CDATA[HP ProBook 4540s: When I press the power button, nothing happens.]]></title>
<description><![CDATA[<p>When I press my power button, nothing happens. How can I fix this?</p>

<p>⟐ Answered febbraio 08, 2023 at 12:57 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/351551/When+I+press+the+power+button,+nothing+happens.</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/351551</guid>
<pubDate>Wed, 08 Feb 2023 12:57:22 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP ProBook 450 G2: HP Probook 450 G2 continuous light power and caps lock]]></title>
<description><![CDATA[<p>Hi help</p>

<p>Laptop not switching on</p>

<p>Blank screen and continuous glow of <strong>Power button</strong> and <strong>Caps lock</strong> (no blinking sequence) when connected to a/c</p>

<p>What i have tried with no success</p>

<ol><li>Remove battery and connect a/c</li><li>Reseat RAM</li><li>Remove power source and press power button for 20 seconds</li></ol>

<p>#</p>

<ol><li>regards</li></ol>

<div class="clearer"></div><div class="headerContainer"><h3 id="Section_Update_01_04_Num_2021" class="header">Update (01/04/2021)</h3></div>

<div class="imageBox imageBox_left"><img src="https://guide-images.cdn.ifixit.com/igi/dSUCQDWyXlZWOaYd.standard" width="282" height="158" class="hasMenu hasLarge" alt="Immagine" onclick="window.open(&quot;https:\/\/guide-images.cdn.ifixit.com\/igi\/dSUCQDWyXlZWOaYd.full&quot;, '', 'width=960,height=540')" /></div>

<p><br /></p>

<p><br /></p>

<p>heres what its showing</p>

<p>⟐ Answered settembre 20, 2025 at 7:07 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/673599/HP+Probook+450+G2+continuous+light+power+and+caps+lock</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/673599</guid>
<pubDate>Sat, 20 Sep 2025 07:07:20 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP probook 4440s: My screen turns white when I turn it on]]></title>
<description><![CDATA[<p>when i turn on my laptop my screen turns white ,but i can still hear it running and when i hooked it up to an external monitor and i can see on the monitor but not on my laptop screen. what is the problem? should i get a new screen?</p>

<p>⟐ Answered maggio 10, 2016 at 11:51 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/181836/My+screen+turns+white+when+I+turn+it+on</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/181836</guid>
<pubDate>Tue, 10 May 2016 11:51:43 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP ProBook 6000: Hp laptop probook 6550b won't turn on]]></title>
<description><![CDATA[<p>I have a hp laptop probook 6550b But won't turn on at all, even though I remove battery and plug in the charger but it's not turning on the indicator light always turn orange so can someone help me with that</p>

<p>⟐ Answered agosto 14, 2023 at 18:44 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/803589/Hp+laptop+probook+6550b+won&#039;t+turn+on</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/803589</guid>
<pubDate>Mon, 14 Aug 2023 18:44:48 -0700</pubDate>
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<title><![CDATA[HP ProBook 450 G4: Laptop will not power on]]></title>
<description><![CDATA[<p>When I plug in my laptop in the power button and the caps lock button light up for a second or 2 then go out. Then the power button and the wifi and the mute button come on for a second or 2 then go out. This happens twice then the laptop becomes unresponsive. I have replaced the power supply but it still acts the same. I have tried the 30 second power button reset and no luck. Any ideas on what to do next?</p>

<p>⟐ Answered marzo 15, 2023 at 12:00 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/762981/Laptop+will+not+power+on</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/762981</guid>
<pubDate>Wed, 15 Mar 2023 12:00:59 -0700</pubDate>
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<title><![CDATA[HP ProBook 4520s: Help! My fan is so loud! What is going on?]]></title>
<description><![CDATA[<p>My HP ProBook 4520s fan is really loud and seems to be running a lot.   My laptop is warmer than usual too.</p>

<p>⟐ Commented giugno 07, 2022 at 11:03 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/343907/Help!+My+fan+is+so+loud!+What+is+going+on</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/343907</guid>
<pubDate>Tue, 07 Jun 2022 11:03:57 -0700</pubDate>
</item>
<item>
<title><![CDATA[HP probook 4440s: Fan is not spinning on laptop.]]></title>
<description><![CDATA[<p>My fan is not spinning causing the computer to get hot. How can I fix the fan?</p>

<p>⟐ Answer deleted maggio 10, 2015 at 4:54 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/192567/Fan+is+not+spinning+on+laptop.</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/192567</guid>
<pubDate>Sun, 10 May 2015 04:54:38 -0700</pubDate>
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<title><![CDATA[HP ProBook 430 G2: Why power button and caps lock flashes once then turns off?]]></title>
<description><![CDATA[<p>Good day, i have Hp Probook 430 G2 laptop. When i plug it in charging LED indicator lits but when i start it up the power and caps lock LEDs blink once and shuts down immediately together with charging LED indicator and the charging LED indicator turns on again. Already tried hard resetting it by disconnecting the battery and the charger and pressing the power button for couple of minutes. I tried different charger, recovery of BIOS using bootable flash disk but not responding also tried replacing and cleaning the RAM. What could be the possible problem? Thanks</p>

<p>⟐ Commented luglio 22, 2026 at 8:19 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/803302/Why+power+button+and+caps+lock+flashes+once+then+turns+off</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/803302</guid>
<pubDate>Wed, 22 Jul 2026 08:19:06 -0700</pubDate>
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<item>
<title><![CDATA[HP ProBook 640 G2: Why my pc won't turn on?]]></title>
<description><![CDATA[<p>I have a problem that when i click power button nothing happens and also when i plug the charger the battery button keep flashing orange light</p>

<p>how to fix this problem? ty</p>

<p>⟐ Commented marzo 15, 2025 at 9:19 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/703465/Why+my+pc+won&#039;t+turn+on</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/703465</guid>
<pubDate>Sat, 15 Mar 2025 09:19:06 -0700</pubDate>
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<title><![CDATA[HP ProBook 650 G2: hp probook 650 g2 black screen blinking light caps lock]]></title>
<description><![CDATA[<p>hp probook 650 g2 black screen blinking light caps lock.</p>

<p>⟐ Answered febbraio 02, 2025 at 12:38 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/853175/hp+probook+650+g2+black+screen+blinking+light+caps+lock</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/853175</guid>
<pubDate>Sun, 02 Feb 2025 12:38:26 -0700</pubDate>
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<title><![CDATA[HP ProBook 4530s: Hard Drive Not Found (3FO)]]></title>
<description><![CDATA[<p>Hi, when i Power my laptop on this error comes out Hard drive error (3FO)</p>

<p>I replaced a new one HDD but still not getting off. Changed RAM Also. Then brought to Repairing shop they are saying to me It has failed MotherBoard.  So what are you guys thinking of it? Should i change it? Help me!!</p>

<p>⟐ Commented maggio 20, 2021 at 2:22 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/419180/Hard+Drive+Not+Found+(3FO)</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/419180</guid>
<pubDate>Thu, 20 May 2021 02:22:44 -0700</pubDate>
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<title><![CDATA[HP ProBook 640 G4: I have an laptop hp probook 8th, it doesn't open … When I connect the]]></title>
<description><![CDATA[<p>I have an laptop hp probook 8th, it doesn't open … When I connect the charger, it flashes in two colors white and yellow, and caps look press switch illuminates and turns off</p>

<div class="large videoFrame videoBox_center" style="width:452px"><div class="videoBox"><video id="UWOVcZajBmcsWs1G" controls width="448"   height="252"   poster="https://guide-images.cdn.ifixit.com/igi/sZsrclDKmVguDcnM.large" loop   >  <source src="https://documents.cdn.ifixit.com/igo/video/ifixit/UWOVcZajBmcsWs1G_MP4_720.mp4" type='video/mp4; codecs="avc1.4D4029, mp4a.40.2"' res="720" label="480p" /> </video></div></div>

<p>⟐ Commented dicembre 19, 2025 at 22:17 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/808767/I+have+an+laptop+hp+probook+8th,+it+doesn&#039;t+open+%E2%80%A6+When+I+connect+the</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/808767</guid>
<pubDate>Fri, 19 Dec 2025 22:17:17 -0700</pubDate>
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<title><![CDATA[HP ProBook 455 G4: screen does not turn on]]></title>
<description><![CDATA[<p>My screen reduces to turn on when I press the power button but when I insert the charger, the light blinks, indicating that's it's charging but the screen does not turn on .</p>

<p>⟐ Commented ottobre 23, 2024 at 8:51 GMT-7</p>]]></description>
<link>https://it.ifixit.com/Risposte/Visualizza/874585/screen+does+not+turn+on</link>
<guid isPermaLink="false" >https://it.ifixit.com/Risposte/View/874585</guid>
<pubDate>Wed, 23 Oct 2024 08:51:29 -0700</pubDate>
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