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Posted 26 January 2010 - 04:49 AM

I'm a computer technician with 10 years experience but this is one of the most bizarre issues I have ever encountered. Apparently, the address bar and seemingly every explorer.exe related bar on my customer's laptop sporadically drops up and down rapidly as shown in this video YES even in safe mode. The laptop is an HP Pavilion dv5

Here's what I've tried so far:

  • disabled the touchpad mouse and used a USB mouse in its place. This seemed to stop the problem until it randomly decided to start again
  • disconnected and reconnected the cables leading from the keyboard and touch pad to the motherboard to make sure nothing was loose
  • checked to make sure no keys or mouse buttons were sticking or no foreign objects were lodged in between keys/buttons
  • scan results from several different antivirus & anti malware tools came up with no findings
  • no warnings in the device manager
  • ran 2 iterations of memtest86 with passing results
  • Didn't notice any weird activity running a live Ubuntu Linux distro
  • Used Hard Disk Sentinel to determine the health of the hard drive to be 97% with 3 weak sectors
  • Ran the HP recovery partition to restore the computer back to defaults...PROBLEM STILL EXISTS!!!!
So right now, I'm at my wit's end. I've researched this problem on several forums including this one and have yet to discover a solution. Worst of all, the problem is so sporadic it's impossible to predict when it will happen next, though usually it tends to happen shortly after start up, resuming out of standby, etc. Hopefully some one out there can lend a fellow tech a hand. Here are the specs should any of you need them:

OS Name Microsoft® Windows Vista™ Home Premium

Version 6.0.6001 Service Pack 1 Build 6001

Other OS Description Not Available

OS Manufacturer Microsoft Corporation

System Name CHRIS-PC

System Manufacturer Hewlett-Packard

System Model HP Pavilion dv5 Notebook PC

System Type x64-based PC

Processor Intel® Core™2 Duo CPU T6400 @ 2.00GHz, 2000 Mhz, 2 Core(s), 2 Logical Processor(s)

BIOS Version/Date Hewlett-Packard F.11, 10/29/2008

SMBIOS Version 2.4

Windows Directory C:\Windows

System Directory C:\Windows\system32

Boot Device \Device\HarddiskVolume1

Locale United States

Hardware Abstraction Layer Version = "6.0.6001.18000"

User Name Chris-PC\Chris

Time Zone Eastern Standard Time

Installed Physical Memory (RAM) 4.00 GB

Total Physical Memory 3.93 GB

Available Physical Memory 2.31 GB

Total Virtual Memory 8.07 GB

Available Virtual Memory 6.48 GB

Page File Space 4.22 GB

Page File C:\pagefile.sys


Edited by JOHNNY RAMONE, 26 January 2010 - 05:03 AM.

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#2 garmanma


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Posted 26 January 2010 - 01:22 PM

That's with any drop-down menu, correct
I'd sure suspect the mouse, but you say it works OK with Linux
That's a head scratcher
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why won't my laptop work?

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#3 Broni


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Posted 26 January 2010 - 02:41 PM

Very wild guess, but...
Since Linux is OK...
Normally, you can open drop down menu by pressing ALT + down arrow
I'd check both ALT keys.
I know, you did but double checking won't hurt.

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Posted 26 January 2010 - 04:28 PM

That's with any drop-down menu, correct

Plainly put, explorer.exe related drop down menus. Also internet explorer, task manager, run command, etc. All others (firefox, etc) are unaffected.

I'd check both ALT keys.
I know, you did but double checking won't hurt.

Yeah that's one of the first things I did. So now I'm running the laptop with keyboard removed...

Edited by JOHNNY RAMONE, 26 January 2010 - 05:04 PM.

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