Question GTX 1660 BIOS screen freezes and sometimes blank.


Oct 18, 2017
So, I recently bought a new GTX 1660 apparently I have an old(2010 custom build) CPU i7 1st gen and a 500watts PSU so, I replaced my GTX 1050 with the 1660 and I connected the HDMI cable, after a few seconds the system booted up and I could hear 2 beeps(1 high 1 low) and it showed me an error code(E6) after that my monitor then showed me the BIOS screen and the computer froze, after a number of tries it showed me the same results and sometimes the monitor would go blank after booting without the BIOS screen being showed to me, please help me with this.

My PC specs

CPU - Intel core i7 870@2.93GHz(Lynnfield) quad-core
Motherboard - Intel DP55WG (AAE57629-407)
Motherboard version - KGIBX10J.86A date - 06/30/2011
Internal HDD - 1tb Seagate(In the past i had some issues with the HDD too)
RAM - 8gb DDr3
GPU(Ex) - Zotac GTX 1050 2gb mini
GPU(new) - Galax GTX 1660 6gb gddr5 Dual fan (6pin power supply connector)
Power Supply - Cooler master 500
ATX 12v ver2.3
My monitor is a VGA only so I use an HDMI to VGA converter.

Please, I really need your help guys.
Last edited:
The beeps you hear would seem to suggest a CPU heat issue. Have you checked whether the CPU cooler or other cables may have been dislodged when installing the new graphics card?

Another thread seems to suggest it might be a BIOS issue with the graphics card:
And this would seem to back up that thread's analysis:
The E6 error code is related to drivers.

If it's the latter, does the GTX 1050 still work with it?


Oct 18, 2017
Yeah the GTX 1050 works perfectly, I think it's related to the BIOS issue I will try enabling the UEFI and see if anything works.
Video card requirements:
  1. PCI Express-compliant motherboard with one dual-width x 16 graphics slot
  2. 1x 8-pin PCI Express supplementary power connectors
  3. Minimum 450W or greater system power supply
  4. 350MB of available hard-disk space
  5. 4GB system memory (6GB or higher recommended)
  6. Microsoft Windows 10, Windows 8 & 8.1, Windows 7 64-bit
  7. CD-ROM/DVD-ROM drive or Internet connection
  8. Windows XP no longer supported
I might point out to you that your power supply does not have a 8-pin PCI Express supplementary power connector. It has a PCI-E 6 Pin x 1