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HP Pavilion DV5: Locks Up Even In BIOS!, Picture Cuts Out Randomly Anytime! HELP!!

post #1 of 2
Thread Starter 
Hi i was given the above mentioned laptop to look at because the display wasn't working. The laptop would power on and two lights would flash by the caps lock and num lock keys. But no display! I stripped the thing down and re did the thermal interfaces on the three chips (CPU GPU and what i guess to be the northbridge?). And also blew out the heatsink (no real dust!). I after what seemed like a heroic amount of screwdriver usage........ Managed to re assemble the thing.

At first the same happened:rolleyes:. The i decided to keep hitting the del key as i powered the laptop up (just in the hope it would boot!). IT DID!biggrin.gif And loaded BIOS defaults. And booted to Window 7..... My friend had a password on it so i just restarted and decided to look what was set in the BIOS (more out of being nosy to be honest!). While in there the whole rig locked up and froze!!

It did the flashing lights thing AGAIN!! I hit the power button and restarted it and it began to boot to windows...... Only for the display to cut off (the lights on the laptop stay on such as power volume and toe others but NO HD light). At the moment it is sat here with the BIOS battery out until the morning. The only change i have personally made is to remove a grey thermal pad from one of the three chips and replaced it with more thermal compound.

Do you think bad heatsink contact would cause this? (maybe a thermal cut out?) im not sure as it seems to vary how long it will operate before it will lock up/display goes but to be honest this is the first laptop i've EVER tried to fix and i would REALLY like some input before i have to strip it down to check (i have NEVER seen so many screws to hold one electronic device together) AND THE RIBBON CABLES.......... Arggggghh!! I'm sure it is correctly reassembled and i didn't have any "leftover" screws:rolleyes: biggrin.gif. Also there was NO picture corruption or display anomaly's and it appeared fine.

Thanx.
    
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CPUMotherboardGraphicsRAM
AMD PhenomII X6 1055T@ 4060Mhz NB@ 3000Mhz ASUS M4A89GTD PRO  XFX R9 390 8GB Corsairs Vengence DDR3  
Hard DriveOptical DriveCoolingOS
Samsung 840EVO 256gb & Seagate 1tb DVD RW Corsairs H110i GT Windows 10 Pro 
MonitorKeyboardPowerCase
SONY 40" V3000 1080p HDTV Microsoft Wireless Corsairs HX750W K62 Dragonlord 
MouseMouse PadAudio
Microsoft Laser Steelseries ASUS Xonar DS PCI 
  hide details  
Reply
post #2 of 2
Thread Starter 
** FIXED **

Was the thermal pad. No contact on one of the three chips.

Thanx.
    
CPUMotherboardGraphicsRAM
AMD PhenomII X6 1055T@ 4060Mhz NB@ 3000Mhz ASUS M4A89GTD PRO  XFX R9 390 8GB Corsairs Vengence DDR3  
Hard DriveOptical DriveCoolingOS
Samsung 840EVO 256gb & Seagate 1tb DVD RW Corsairs H110i GT Windows 10 Pro 
MonitorKeyboardPowerCase
SONY 40" V3000 1080p HDTV Microsoft Wireless Corsairs HX750W K62 Dragonlord 
MouseMouse PadAudio
Microsoft Laser Steelseries ASUS Xonar DS PCI 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD PhenomII X6 1055T@ 4060Mhz NB@ 3000Mhz ASUS M4A89GTD PRO  XFX R9 390 8GB Corsairs Vengence DDR3  
Hard DriveOptical DriveCoolingOS
Samsung 840EVO 256gb & Seagate 1tb DVD RW Corsairs H110i GT Windows 10 Pro 
MonitorKeyboardPowerCase
SONY 40" V3000 1080p HDTV Microsoft Wireless Corsairs HX750W K62 Dragonlord 
MouseMouse PadAudio
Microsoft Laser Steelseries ASUS Xonar DS PCI 
  hide details  
Reply
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Overclock.net › Forums › Mobile Computing Forum › Laptops and Netbooks › HP Pavilion DV5: Locks Up Even In BIOS!, Picture Cuts Out Randomly Anytime! HELP!!