Thank you very much for the rapid response and I am really grateful for the professionalism that you have demonstrated.
In relation to the programmes for driver
downloads, I myself don´t really like them and I have only used them in order to download the driver for the graphics card which I couldnt find anywhere else. I dont update drivers
at all and I only installed the drivers that originally came with my computer. Today I updated all the original drivers that were missing except "Mass Storage Controller PCI \ VEN_104C & DEV_803B & SUBSYS_9016104D & REV_00 \ 4 & 248F4965 & 0 & 1AF0"...which I cannot find.
On the other hand, I have already had windows 7 ultimate installed on this computer for two years and I havent had any problems with it before.
Attached is the report I got for memtest86.
Also to let you know that I no longer have warranty.
Thank you very much for your time.
All the best.