Memtest 86 download Memtest86 - Download Page
Just follow the instructions to make a ISO run 1 stick at a time in the proper slot refer to your manual or download it on line.
SFC /SCANNOW Command - System File Checker
You can run check disk to do a system file check.
Or you can run Western digital datalife guard to check your disk WD Support / Downloads / SATA & SAS / WD VelociRaptor
For a clean install 2 minutes is long see here ReBoot Time
Then do this and show us Restart Time