I have to tell you that your error message is a new one on me. I did a search of the entire Microsoft help web site and came up empty. ERROR: "DRAM timing is too tightly, load default"
You don't tell us much about your system (OS, virus software, etc.) so it's hard to guess. But ... some of the symptoms could indicate that you have a bug in your system. Have you swept the system for spyware, adware, virus's, etc.? If not, that's where I would start. I'd run a virus check first and make sure you have a good program with the latest definitions. I use Norton's AV and firewall and have for many years. I'm real happy with the results. There are free downloads available also for some AV programs and some of the best spyware and adware finders are also free downloads. I recommend that you download and run all three of the spyware programs below. After download and before running each of them, make sure you check for updates. Run them in the order given.
Spybot Search & Destroy (FREE)
http://www.safer-networking.org/en/download/index.html
Ad-Aware Personal (from Lavasoft) (FREE)
http://www.lavasoftusa.com/default.shtml.en
SpywareBlaster (FREE)
http://www.javacoolsoftware.com/spywareblaster.html