BSOD, Can't boot into safe mode, Windows XP SP2

Hi, I'm currently getting a BSOD on my Windows XP Professional with Service Pack 2. I started getting problems last night after surfing youtube a bit and realized my computer was acting kind of weird. That's when i closed my browser and tried to open it again and it came up with a message that referred to my harddisk space. I don't remember what it said. But that's where the problem started and i got a Windows security Alert that was accompanied by a program called "Quick Defrag" that popped up out of nowhere. I was scared I got a virus because it was doing some kind of scan so I quickly closed the program. I was curious if it installed anything or if any program was running so I used ctrl+alt+delete to check for any fishy programs running. I saw the programs and they were named in a bunch of random letters like "GejhwySas.exe." Since I couldn't access my browser to use a free virus scanner I decided to restart my computer, and that's when i got a BSOD. I attempted to boot in safe mode and it still comes up with a BSOD, so basically i can't even boot into Windows... This is also the first time I've gotten any kind of BSOD with this computer. Someone please help me... I have no idea what to do at all and I have files that I don't want to lose.

The stop message says:

*** STOP: 0x0000008E (0xC0000005, 0x804DAAB5, 0xF78AAAE8, 0x00000000)

Beginning dump of physical memory
Dumping of physical memory to disk:
 
Do you have any friends with tech knowledge? One of the reasons we here at TechSpot strongly advise those running XP to make sure they have installed SP3 for security reasons.
 
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