Old fashioned fault finding. ?
ignore the windows detection for now. ?and Look at the circuit. See if a resistance measurement across +to- ?(caution. your meter may not be +ve on the red lead. Testing a diode is an easy check)) can see a problem and so avoid testing in ¡®smoke mode¡¯ with power on.?
Print out board layout
Remove components or cut tracks (to isolate the part of the circuit drawing too much current) marking what you did on the print for later restoration . ?
Check component placement and polarity?
Bruce Akhurst