Using Kingston RAM on a MoBo likely designed by Dell can lead to issues.
Have you switched the RAM out BACK to Dell Standard RAM? It also, although I cannot verify, that you have crossed the RAM? I’m almost wondering at this point if you’re pushing the limits of your board by using un-QVL RAM inside the mobo.
The fact you have 2 fried boards is worrying to say the least. At this point I’m not thinking this is a Software or even virus issue. I think you will be better served at http://www.geekstogo.com/forum/forum/9-hardware-components-and-peripherals/ for this form of issue to be honest.
A BSOD Crash report could verify this (Maybe?). However, if it is a Hardware issue, changing out to Safe Mode likely will not do anything for you. I really do recommend you visit G2G, ask some questions and get some help their. They’re extremely knowledgeable in this (And Malware assistance too!). Essexboy, one of the malware/virus experts here actually teaches there. Although it’s been mentioned to me he is on Vacation.