BSOD and Stop Errors Becoming More Frequent

I would also suggest that you run this:

Driver verifier

Using Driver Verifier is an iffy proposition. Most times it'll crash and it'll tell you what the driver is. But sometimes it'll crash and won't tell you the driver. Other times it'll crash before you can log in to Windows. If you can't get to Safe Mode, then you'll have to resort to offline editing of the registry to disable Driver Verifier.

So, I'd suggest that you first backup your stuff and then make sure you've got access to another computer so you can contact us if problems arise. Then make a System Restore point (so you can restore the system using the Vista/Win7 Startup Repair feature).

Then, here's the procedure:
- Go to Start and type in "verifier" (without the quotes) and press Enter
- Select "Create custom settings (for code developers)" and click "Next"
- Select "Select individual settings from a full list" and click "Next"
- Select everything EXCEPT FOR "Special Pool", "Force Pending I/O Requests" and "Low Resource Simulation" and click "Next"
- Select "Select driver names from a list" and click "Next"
Then select all drivers NOT provided by Microsoft and click "Next"
- Select "Finish" on the next page.

Reboot the system and wait for it to crash to the Blue Screen. Continue to use your system normally, and if you know what causes the crash, do that repeatedly. The objective here is to get the system to crash because Driver Verifier is stressing the drivers out. If it doesn't crash for you, then let it run for at least 36 hours of continuous operation (an estimate on my part).

Reboot into Windows (after the crash) and turn off Driver Verifier by going back in and selecting "Delete existing settings" on the first page, then locate and zip up the memory dump file and upload it with your next post.

If you can't get into Windows because it crashes too soon, try it in Safe Mode.
If you can't get into Safe Mode, try using System Restore from your installation DVD to set the system back to the previous restore point that you created.

Well you could also put it on a different hard drive disk if you have one.

Driver verifier will only stress the drivers, but you need to get a new disk a.s.a.p. and backup your stuff from the hard drive you posted the benchmark results of in post 17

I have seen the 0xF4 being caused a lot by failing hard drives due to problems with accessing the data (Input/Output Errors)

There are a few hard drives I can recommend that are similar to the specs of your hard drive or better, but the size is 2TB to 6TB.

Well bigger drives are becoming more cheap, one thing that most would recommend is going for SSD with OS but if you wan't a hard drive for mainly storage a Seagate Barracuda 2tb will be okay.

And yes the most probable cause is a faulty hard drive, now that you have said that you couldn't test the drive 100% without getting a BSOD.

I found the Seagate Desktop HDD ST2000DM001 2TB, you might like it.