Issues with suspending and resuming are often caused by Connected Standby. To disable Connected Standby, open Command Prompt as administrator and paste powercfg /setacvalueindex scheme_current sub_none F15576E8-98B7-4186-B944-EAFA664402D9 0 && powercfg /setdcvalueindex scheme_current sub_none F15576E8-98B7-4186-B944-EAFA664402D9 0 exactly.
If it doesn't change anything, there could be a setting in BIOS for the standby level. Change it from S1 or S2 to S3. If it's already set to S3, glitches with power management are often caused by the Embedded Controller. To restart the Embedded Controller, Shift + Click the Shut Down button, unplug the charger, and look for a pinhole on the underside of the laptop with a battery icon beside it. Use mechanical pencil graphite to press it for 1 minute, then turn the computer on again.
If it still doesn't work, download PSTools from Microsoft Sysinternals. Extract the ZIP and copy PsShutdown.exe to your System32 folder. Press Windows + R, psshutdown.exe -d -t 0, Ctrl + Shift + Enter. Does this work?