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WIN 7 logo freeze OR blinking underscore - what causes this? (Asus X99S Samsung evo 840 250gb drive)

Tags:
  • Evo
  • Samsung
  • Computers
  • Motherboards
  • Asus
  • Windows 7
October 10, 2014 2:30:57 AM

Hi, I have a computer setup with a new Asus X99s motherboard, Crucial DDR4 ram and i7-5930k. From before I have a R9 290X and win7 64bit sp1 on a samsung evo 840 250gb SSD. The GPU and CPU are both watercooled and running at nice temperatures.

Every now and then, and seemingly more often when I start the PC after it has been turned off for a while, I get either a win 7 logo freezing mid animation OR a blinking underscore, forcing me to reboot and get the option to launch windows repair.

I've tried running memtest (memtest+ wouldn't boot from the usb stick for some reason), but that didn't come up with any errors (only ran an hour, should I let it run longer and repeat the tests again?). I also tried samsung magician but it didn't give any errors on the SSD. I didn't have any problems with the same SSD, GPU and attached USB things (keyboard, X52pro, mouse, wifi, dk2) with my old motherboard ASUS P8Z77-V DELUXE and i7-3770K so I'm currently just guessing it might be something motherboard-related...?

Is the logo freeze/underscore thing something that might be caused by a faulty motherboard?

Sorry for the long post :) 

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