I bought a used Dell Latitude E6520 a couple of months ago under rather dubious circumstances. When the guy I bought it from got it out from where it had been sitting, he tried to boot it, and it would almost immediately die in a BSOD. He thought it was a HDD issue, so I told him not to worry about it, as I was getting a 512GB SSD to put in it. After I got it home, I tried re-installing Windows 7 x64 on the original HDD, and it would work till Windows Update had installed all the newest updates. Then all of a sudden it would just die, and wouldn't re-boot. So, I just waited till I received my new SSD, then did a clean install, and voila, all my problems were gone! I didn't have any problems with BSOD, or slowness, or anything!
Until about a month ago...
All of a sudden, it has started acting up again. The first time, it just flashed a BSOD and re-started. No big deal. But the second time, when it tried to re-start, it showed an error: "No boot media found" That scared me! I realized that I hadn't made a backup for probably 2 months, and I was afraid it was all gone! But after letting it sit for a little while, I tried re-booting again, and thankfully, it worked! Needless to say, I immediately did a full backup of the SSD! After re-booting the second time the screen was all messed up, the resolution was set to 800x600, and when it finally booted, it "detected" the graphics card, and WU downloaded and installed the driver for it. After restarting, the screen was basically back to normal. However, ever since then, it has "acted up". Especially Firefox, when I switch to between tabs takes a while, and exhibits some artifacts for a few seconds.
Here's a link to my machine's specs: http://speccy.piriform.com/results/OI8ls3RBGTkNjUoK1243Uye
I did a little research about BSODs, and I enabled the logging, kernel dumps, and what-not. Now just last night, I was just using my computer normally, (i.e. not doing anything resource intensive) but it was really heating up. It was almost too hot to touch. Then it completely froze up, the mouse wouldn't move, no response at all, then after a couple of minutes, it crashed to a BSOD. I got out my camera and took a picture of it just in case, and I'm glad I did, because there are no MiniDump logs that I can find.
Does anyone have any suggestions? I know quite a bit about computers in general, but I'm no hand at decrypting BSOD errors.