Im just starting out in photoshop and i have come across a problem where all the colours that are displayed ,wherever it maybe, are fully black. I tried the method of seeing if it was in grayscale even though white isn't showing up either which didn't work. I also tried checking if the graphics card was being used or not and again that didn't work. In summary it seems to be fully black (even when my background is selected as white) and i can't find a way to get colours. I did also try uninstalling and reinstalling.
That sounds like a broken monitor profile, which is set in the operating system but used by Photoshop.
Can you do this as a testing step:
1. Close Photoshop
2. Type Color Management into the Windows search box
3. In the list of monitor profiles make a note of the profile name which is currently set as default.
4. Click "Add" and add the profile sRGB IEC61966-2.1 to the list
4. Now that it is in the list, click on it and press "Set as Default Profile"
5. Open Photoshop
Do you now see colour? If so then it proves that your monitor profile was broken and you now need to replace the sRGB profile that we used to test with a specific profile for your monitor - preferably one made with a calibration device such as the i1Display or similar.
If you still do not see colour, carry out steps 1 to 5 again but set the previously used profile back as the default.