Sudden, Unexplained BSOD with No Text

Hi, I hope someone can help.

I posted a similar query in January as this was when I first encountered the issue.
At the time I thought the problem was connected to my Xbox controller as the BSOD occurred
after I plugged it into the USB port. However, this time the BSOD occurred while I was reading an online article at telegraph.co.uk. My laptop's screen suddenly went black while I was halfway through the article. It then displayed what looked like a BSOD, only there was no text, just lots of constantly changing, multi-coloured rows of pixels. After a few seconds I heard a couple of very faint pops or clicks, and the laptop rebooted itself along with a screen saying Windows hadn't shut down properly. I made a note of the errors Windows displayed afterwards in case they're useful:

Problem Event Name: Blue Screen
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 2057

BCCode: a
BCP1: 0000000000000000
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFF8000367C732

Service Pack: 1_0
Product: 768_1

Files that help describe the problem:

C:\Windows\Minidump\030516-28735-01.dmp
C:\Users\Chrissie\AppData\Local\Temp\WER-76502-0.sysdata.xml

I've run a full scan with McAfee which found nothing. I ran a scan with MBAM which found a generic PUP,
which it quarantined. I don't think the PUP caused this as I ran a scan the first time this happened and MBAM found nothing that time. Apart from these odd occurrences, everything else seems to be working normally. My laptop is a Dell Studio 17 running Windows 7 64bit.

Any help would be greatly appreciated.

Hi BorisTheAnimal,

Thanks for the reply. Just wanted to ask a couple of questions before attempting the driver installation:

1: Do I need to install chipset drivers as well?
2: Would the free version of Revo Uninstaller be enough to remove the drivers?

Thanks. :)

Thanks Boris,

Hope these aren't silly questions but I'm having trouble locating the driver that needs uninstalling using Revo Uninstaller. According to the AMD page and Device Manager, my current driver is called ATI Mobility Radeon HD 5650 but I can't work out how to access this using Revo.

This might be another silly question, but if the driver that caused the BSOD was for DirectX, why is it necessary to update this particular driver?

Thanks for your help.

Thanks Boris.

The AMD site automatically downloaded the driver file to somewhere in C:\Users but I can't locate it, which is annoying as I wanted to move it to the Desktop.

I found something in Revo called ATI Catalyst Control Center - is this the software that needs uninstalling?

Sorry for so many extra questions. The default location for the new driver installation is C:\AMD\AMD-Catalyst-15.7.1-Without-DOTNet45-Win7-64bit - is this okay?

Thanks. :)

Thanks again, Boris,

I checked the downloads folder several times and it wasn't there, which was weird since that's where all my downloads usually go. Finally found the driver file, it was in Local/Temp for some reason. :s

If I uninstall the ATI software, will a newer version be installed with the new driver?

Thanks. :)