Why my PC turn on by itself during sleep?

If the network card is set to wake the PC from sleep, then a signal from the network can wake the PC.

What does a signal from the network card mean?

The purpose of the network card is to connect the PC to internet? Network card purpose is to get internet for PC?
 

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Windows 7 Home Premium 64 BitIntel8GBRadeon HD 5770
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Home Premium 64 Bit
CPU
Intel
Motherboard
ASUS P7P55DE-PRO
Memory
8GB
Graphics Card(s)
Radeon HD 5770
Hard Drives
WD Black
Antivirus
MSE
If the network card is set to wake the PC from sleep, then a signal from the network can wake the PC. It can happen at any time. It may take five minutes, it may take and hour, but eventually there might be activity on the network which will wake the PC.

Check the following setting on your network card:

View attachment 371676

Make sure the box next to the highlighted sentence isn't ticked.

Thanks.

Are all 3 boxes ticked by default?

I saw my all 3 boxes ticked. I will untick [allow this device to wake the computer] and try.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 BitIntel8GBRadeon HD 5770
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Home Premium 64 Bit
CPU
Intel
Motherboard
ASUS P7P55DE-PRO
Memory
8GB
Graphics Card(s)
Radeon HD 5770
Hard Drives
WD Black
Antivirus
MSE
If you have a wireless mouse, those can be more problematic, and wake the PC without any movement.

Also run this command from an elevated command prompt to see if there are any requests that might cause a wake up:

powercfg -requests
 

My Computer My Computer

At a glance

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x6...AMD Athlon II x4 6206GB GSkill DDR2 800AMD 4670 GPU + AMD 4200 IGP
Computer type
PC/Desktop
Computer Manufacturer/Model Number
home built
OS
Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM
CPU
AMD Athlon II x4 620
Motherboard
Gigabyte GA-MA785G-UD3H
Memory
6GB GSkill DDR2 800
Graphics Card(s)
AMD 4670 GPU + AMD 4200 IGP
Sound Card
on board Realtek ALC889A
Monitor(s) Displays
RCA 40" LCD TV, Insignia 32" LCD TV, HP 15" LCD monitor
Screen Resolution
1680 x 1050
Hard Drives
OCZ Vertex 3 120GB,
Samsung F3 1TB (3),
Several others - WD, Seagate, Hitachi, ...
PSU
Corsair 500 W
Case
Rosewill mid tower
Cooling
CM 90mm rifle
Keyboard
Gyration wireless, Logitech wireless, Dell USB wired
Mouse
Gyration wireless, Logitech wireless, V7 USB wired
Internet Speed
Spectrum - 100Mbps D / 10Mbps U
Antivirus
Avast, MBAM3, EMET, WinPatrol
Browser
Pale Moon, Firefox, IE
Other Info
2 multi-boot PC's
Mainly HTPC/Office/Gen purpose (no gaming).
Trendnet USB KVM.
LG DVD burner/Blue Ray Player.
Tray system for removable SATA backup drives.

Not currently OCd, under-volted.
I use Hybrid sleep, rarely re-boot or shutdown.

Hauppauge HD-PVR, Avermedia PCIe TV Tuner, Hauppauge PCI TV Tuner.
If you have a wireless mouse, those can be more problematic, and wake the PC without any movement.

Also run this command from an elevated command prompt to see if there are any requests that might cause a wake up:

powercfg -requests

I am using wired mouse.

None.
cmd.PNG
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64 BitIntel8GBRadeon HD 5770
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Home Premium 64 Bit
CPU
Intel
Motherboard
ASUS P7P55DE-PRO
Memory
8GB
Graphics Card(s)
Radeon HD 5770
Hard Drives
WD Black
Antivirus
MSE
That's good, you don't have any requests that could cause issues.
Hopefully unticking the allow to wake check-box's will fix your issue.

If not, i would look in Event Viewer for events around the time the PC woke up.
 

My Computer My Computer

At a glance

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x6...AMD Athlon II x4 6206GB GSkill DDR2 800AMD 4670 GPU + AMD 4200 IGP
Computer type
PC/Desktop
Computer Manufacturer/Model Number
home built
OS
Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM
CPU
AMD Athlon II x4 620
Motherboard
Gigabyte GA-MA785G-UD3H
Memory
6GB GSkill DDR2 800
Graphics Card(s)
AMD 4670 GPU + AMD 4200 IGP
Sound Card
on board Realtek ALC889A
Monitor(s) Displays
RCA 40" LCD TV, Insignia 32" LCD TV, HP 15" LCD monitor
Screen Resolution
1680 x 1050
Hard Drives
OCZ Vertex 3 120GB,
Samsung F3 1TB (3),
Several others - WD, Seagate, Hitachi, ...
PSU
Corsair 500 W
Case
Rosewill mid tower
Cooling
CM 90mm rifle
Keyboard
Gyration wireless, Logitech wireless, Dell USB wired
Mouse
Gyration wireless, Logitech wireless, V7 USB wired
Internet Speed
Spectrum - 100Mbps D / 10Mbps U
Antivirus
Avast, MBAM3, EMET, WinPatrol
Browser
Pale Moon, Firefox, IE
Other Info
2 multi-boot PC's
Mainly HTPC/Office/Gen purpose (no gaming).
Trendnet USB KVM.
LG DVD burner/Blue Ray Player.
Tray system for removable SATA backup drives.

Not currently OCd, under-volted.
I use Hybrid sleep, rarely re-boot or shutdown.

Hauppauge HD-PVR, Avermedia PCIe TV Tuner, Hauppauge PCI TV Tuner.
Also, after you untick all the allow to wake check-boxes, run another Powercfg -devicequery wake_armed command.
See if anything is still listed.
 

My Computer My Computer

At a glance

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x6...AMD Athlon II x4 6206GB GSkill DDR2 800AMD 4670 GPU + AMD 4200 IGP
Computer type
PC/Desktop
Computer Manufacturer/Model Number
home built
OS
Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM
CPU
AMD Athlon II x4 620
Motherboard
Gigabyte GA-MA785G-UD3H
Memory
6GB GSkill DDR2 800
Graphics Card(s)
AMD 4670 GPU + AMD 4200 IGP
Sound Card
on board Realtek ALC889A
Monitor(s) Displays
RCA 40" LCD TV, Insignia 32" LCD TV, HP 15" LCD monitor
Screen Resolution
1680 x 1050
Hard Drives
OCZ Vertex 3 120GB,
Samsung F3 1TB (3),
Several others - WD, Seagate, Hitachi, ...
PSU
Corsair 500 W
Case
Rosewill mid tower
Cooling
CM 90mm rifle
Keyboard
Gyration wireless, Logitech wireless, Dell USB wired
Mouse
Gyration wireless, Logitech wireless, V7 USB wired
Internet Speed
Spectrum - 100Mbps D / 10Mbps U
Antivirus
Avast, MBAM3, EMET, WinPatrol
Browser
Pale Moon, Firefox, IE
Other Info
2 multi-boot PC's
Mainly HTPC/Office/Gen purpose (no gaming).
Trendnet USB KVM.
LG DVD burner/Blue Ray Player.
Tray system for removable SATA backup drives.

Not currently OCd, under-volted.
I use Hybrid sleep, rarely re-boot or shutdown.

Hauppauge HD-PVR, Avermedia PCIe TV Tuner, Hauppauge PCI TV Tuner.
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