Unexplained Gmod crashing

[Mongoose]

For some reason, since I've installed GMod on this new laptop, HL2.exe freezes and then ultimately crashes at roughly 3.5 Gigs of total usage. I can't understand why A)it's choosing that number and B) Why Gmod is using 3.5 Gigs of my RAM when my other games don't do even close, and to make matters worse, my old computer barely clocked GMod at just over a Gig of RAM usage at any given time, and still didn't crash. It seems to accelerate based on the map (For example, md_Whitehills_b2 makes me crash in roughly 20 minutes time, whereas other maps give me at least an hour, or I don't crash at all), but regardless, once it reaches roughly 3.5 it will crash.

My specs, for the record. Dell Inspiron 5520, with an Intel i5-3210M CPU, 8 gigs of RAM, and 1 Terabyte hard drive, with roughly 250 gigs currently being used.

 

[nonsenze]

You verified integrity of game cache?

 

[Mongoose]

Doing that as I write.

 

[Raviool]

buy an alienware

 

[Mongoose]

Verified cache, defragged, and it still seems to be doing it.

It couldn't be my battery plan which is using "Desktop mode," could it? I literally can't think of anything else.