Vista - Vista Restarts after first cold boot

Hello,

My friend has a VISTA Medion laptop (I dont have full details to hand but will get this and post latter). It has a problem that has just started to happen over the last two months or so (so they say). It started off that after starting the laptop for the first time after about 5-10 mins it would crash and go to a black screen with a few blue boxes on, the only way to get it back would be to hold the power button till it came on. I had a look at it and updated video drivers, windows and checked for viruses and malware. All of this seemed to do was move the problem to just going to a black screen (like hibernation) but i could not get it out of it unless again using the power button. I have now changed all power settings in basic and advance to off or various different versions of some off some on different times all to no avail. I have also disabled everything other than MS from startup. However this has now resulted in the laptop restarting itself again after 5-10 mins. Again it is only from a cold boot, once it has restarted once it is fine till the laptop is turned off.

Having read a few post i have since updated all the drivers i could think of including sound and network drivers. I have updated the BIOS all with very little change. The current state is that it still restarts but again only off a cold boot but now just before it does the screen goes blank and the mouse cursor gets bigger.
So;
I have already updated all drivers & the BIOS
I have tried power settings including making sure hibernation is active and deactivate.
I have disabled startup progs in MSCONFIG
I have Virus and malware scanned

I do not think it could be overheating as it only happens when the laptop is turned on for the first time and so has not had time to overheat and it would do it more often and not after only 5-10 mins. I have thought it could be the RAM but before spending money on new RAM i wanted to see if anyone else had any ideas.
Does anyone know what the main difference is in the boot sequence when it does a cold boot?

I forgot to mention the only thing my friend can think changed around about the same time as the problem started is that she started to use the wirless on the laptop.

Thank you for your time

Hi Joffy,

It may something to do with the wireless connection - see this thread for others with vaguely similar issues. No solution on that thread yet, though.

Sudden Bluescreen because of Wireless Network Adapter

Suggest you get your friend to stop using the wireless connection and see if the problem persists - at least that may narrow it down.

SIW2

You might want to try manually turning off the wireless next time you go to shut down (if that is possible - for example, my HP Pavilion Tablet PC has a button on the side to turn the wireless on and off) and then shut down, and on your next boot try letting the system boot with the wireless turned off, and then enabling it.

Hi

As well as the article posted by SIW2 for you to check out, please do this.
Open Control Panel - System - click Advanced System Settings link - Startup & Recovery box, click the Settings button. Now take the check out of the "Automatically Restart" box and also make sure the "Write an event to the log" box is checked and then Ok out.
This will cause a BSOD instead of just restarting and this may hold the info we need to find out what's causing this crash. Post all the info from the BSOD here completely please and we'll see what it says. There also should be an Event Viewer log on this crash so you can look in there for the info it reports and post that also.

Thank you all, i am getting the laptop back tomorrow so i will be able to post all info on the system and also try the sugestions. Will post back with all results.

Thank you again for your time and i am sure my friend thanks you as well.