BSOD shutdown becoming more frequent error ntoskrnl.exe+7fd00

Hi guys i really hope someone can help me with this i have been pulling my hair out for a while now and going in circles

this all started back in august ( yes way back ) i was getting the odd crash blue screen i thought it may have been a virus causing it so did all the usual scans but the crashes were still happening one every week or two then lately they started getting more frequent I searched around for a solution and reading on differant forums I thought i found the answer although it ment drastic action i backed up what files i needed to keep and did a factory restore on my laptop to factory settings thinking this would solve it ( wrong ) im not very techy still learning a bit at a time ....now i have managed to get into the dump files and its saying the cause of the crashes was ntoskrnl.exe +7fd00 but reading a little on the forum this may not be the cause i have uploaded the logs if someone could have a look for me and perhaps help in any way to solve this problem be very grateful .

my device is acer aspire 5749 notebook
windows 7 home premium 64 bit SP1
intel core i3-2330m
intel graphics 3000
6gb ddr3 memory
750gb HDD

While i was running the log collecter i had a few more blue screen crashes so im not sure if all the logs completed so i have 2 zip files i will upload both thanks in advance guys

Hiya and welcome to SevenForums!

Code:

BugCheck 3B, {c0000005, fffff80002d57b55, fffff88003d87b40, 0}

Probably caused by : memory_corruption ( nt!MiGetTopLevelPfn+65 )

Code:

BugCheck 1E, {ffffffffc0000005, fffff80002cd3f7f, 0, ffffffffffffffff}

Probably caused by : memory_corruption ( nt!MiMapPageInHyperSpaceWorker+1b )

Code:

BugCheck 24, {1904fb, fffff88005724f38, fffff88005724790, fffff80002d00f7f}

Probably caused by : memory_corruption ( nt!MiMapPageInHyperSpaceWorker+1b )

Code:

BugCheck 34, {50853, fffff88006efb358, fffff88006efabb0, fffff80002cdcb27}

Probably caused by : memory_corruption ( nt!MiPfnShareCountIsZero+77 )

Run MemTest86+ for 8 passes, It must be MemTest86+. RAM - Test with Memtest86+

Thanks Laith for your quick response and for your help really appreciate it mate i will run the MemTest86+in the morning and get the results back to you tomorrow i have never opened a laptop to see the inside as i am a complete newbie to all this is there a tutorial to removing and replacing the Ram stick and where to find them in my laptop would i need any special tools for this besides a screwdriver lol thanks again for your help.

This will work on any laptop.

That was quick cheers bud i will have a good look at it before i start thanks

hi guys im having problems running MemTest86+ I have put it on a 16gb Kingston usb but it will not boot I then tried with a cd disk and burnt the iso version on but this does not boot either am I doing something wrong or missing something I followed the instructions with the ram test ...also had a few more blue screen crashes on reboot .Microsoft updates installed 142 updates this morning that's why its took so long getting back to you sorry

Hi axe thanks for replying how do I do this

thanks for your help bud ill try now