Monitor unable to detect pc

[User-name]

after i bought my com 7 days ago it work fine untill today my monitor unable to detect my pc. I tried using other computer to connect my monitor and it work fine so its not my monitor problem also the graphics card is running normally fans are on pcie are connected and 1 thing is the last time i shutdown my computer it showed raptr error something by shutting down the computer and i was too late to click the cancel shut down button please help.

Update* Removed the graphics card and it works starting up so i guess its graphics card problem

 

[User-name]

bump bump

 

[jtjt00]

Without the the parts list, bros here don't know if your rig is new or from Garages Sales.

 

[User-name]

Without the the parts list, bros here don't know if your rig is new or from Garages Sales.

mobo = asrock h87 performance
Cpu = i7-4770
gpu = powercolor r9 290 pcs+
psu = seasonic g750
ram = g skill ripjaws-x 1600nhz cl9 dual channel kit 8gb
os = win 7 home premium

everything works fine when i connect to onboard gpu and when connect hdmi to gpu the monitor is not detecting anything also in device manager the gpu is not detected but the gpu in the case is working e.g fans operating

things that i did
- tried installing newer version of drivers cannot due to gpu not detected
- taking out the gpu and uninstall catalyst and other amd related drivers/softwares and put back in gpu and tried installing the amd software but gpu not detected.

Also this happened when i update the drivers which is yesterday it was working fine for the past 6 days . Yesterday when i shut down my com it shows error

 

[jtjt00]

Maybe your GPU is having issue, if within 7 days exchange it at the shop.

 

[User-name]

This time should i change to sapphire or other brand then powercolor?

 

[jtjt00]

Stay clear of Sapphire, 2 years warranty only.

This time should i change to sapphire or other brand then powercolor?

 

[shadow84]

At the top under your name, click on the '+'. Go to 'Edit Profile' and type out your specs. Easier for us to see instead of you keep on typing it out...