I just upgraded my old old memory from 1 GB to 4 GB(2x2GBs). For the first time it was fine but when I opened it in the evening, it showed Blue screen after an hour or so and the next time it showed it in less than 10 min. This is the fourth boot. Nothing happened in safe mode(I used a shredder to keep it awake for half an hour).
Also, my USB dongle stopped working too( It was showing No device in the software but was showing the card in USB).
Then I uninstalled it, it did not work until I rebooted the laptop.
Is it the RAM or something else? Please help.