Intel Speedstep freezes system on bootup when enabled!

About 3 weeks ago my M17x crashed in the middle of gaming. I got a windows blue screen with IRQL error code. After I got the blue screen my computer when rebooting would freeze on start. I couldn’t even put my system in recovery mode. Eventually I found out the only way I could get my system to startup is I had to disable Intel SpeedStep through Bios. However now all my games are running slow and not optimized to the correct video settings, all games are unplayable due to the FPS drop. Even when the settings are all set to low my FPS is 1/3rd what it use to be and my games are skipping frames. I’ve had my computer checked by geek squad who were useless and told me to contact Microsoft and Dell after there basic troubleshooting did not fix either issue. I had a Microsoft technician check the issue with no luck in getting the matter resolved. I currently have an open case with Dell but I’ve spent 10 hours over the phone with them this last week and now I’m waiting for a call technician to get back to me. The technicians I’ve spoke too have done all basic troubleshooting with no success of fixing the issue. If anyone could please give me some info that could possibly fix this issue I would be greatful. As the games are all still performing terrible and I’m almost certain this is all linked to the Speedstep issue I’ve encountered.