Hi, BleepingComputer folks.
Long time user of your fantastic tools, first time poster.
I'm helping a friend diagnose this laptop. Here are the model numbers and small history of it, which I feel may help point in the correct direction for a diagnosis:
Model is a Toshiba Satellite C870.
This laptop was supposed to come with Windows 8, but the owner downgraded to 7 Pro OEM 64 bit from the factory. This configuration worked OK for around 3 years, but the hard drive started getting bad sectors 4 months ago. The owner enlisted my help, so I created some recovery discs while the drive still functioned, installed a Silicon Power S60 240gb SSD, then reinstalled Toshiba's OEM windows 7 from those recovery discs.
Everything worked fine for about 2 months, but now the laptop gets random BSOD's. Sometimes they'll happen within 2 minutes of booting up, and other times, one can run the laptop for 48 hours straight without problem. They don't seem to be tied to any form of user input or interaction.
Quick summary of the BSOD is:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033
Additional information about the problem:
OS Version: 6_1_7601
Service Pack: 1_0
Things I've tried so far:
The device manager is not showing any obvious driver issues (no yellow triangles with ! marks), and Windows Update states everything is up to date.
sfc /scannow command from Elevated command prompt also states that everything in Windows is groovy.
I updated the SSD's firmwares, and got another BSOD about 10 minutes afterwards, so I'm going to rule that out, haha.
I reconnected the solid state drive twice, it's still giving intermittent bluescreens. Also did a teardown of the laptop to make sure there wasn't a loose connection from the motherboard to the SATA connector, but it appears to be directly soldered to the mainboard.
Also ran a chkdsk /f on the suspect drive, it came out clear.
Followed that up with a drive health utility on Hiren's Boot Disc. Also came out clear.
Also of note: Since this seems to be an intermittent problem, I will boot the laptop & open a text file to help check if the laptop has crashed & rebooted by the time I come back to it. While I had one of these text files open, I noticed that it looks like the Windows task bar keeps crashing. (In other words, the notification icons keep vanishing & reappearing, and the toolbar itself will turn black and drop away, then reappear a few moments later.) (The Auto-Hide feature for the task bar is disabled.)
I disabled all startup stuff except antivirus and Covenant Eyes via run > msconfig.
Any assistance you could provide for helping me root this problem out would be greatly appreciated.
Thanks in advance,