BIG SUR goes to sleep mode after Boot

i installed BIG SUR alongside Windows 10 several months ago and it was working without problems,but there were some problems in Windows10 and I reinstalled it,

now when i boot from 'big sur' i get a black screen but if pc goes to sleep and wake up again i find pc work without problems >>This means that every time I want to use MacOS, I must turn on PC > and then leave it until it enters into sleep mode > and then press any key until it wakes up > after that I can work on it !!

- i have disabled IGPU in BIOS- I have completely formatted the hard drive,- And I downloaded the New Big Sur Olarila again,- And I Make New OpenCore 6.8 files again

and still same problem !!

This is my Power Management logs

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2021-04-26 18:52:44 +0200 ShutdownCause SMC shutdown cause: 5: Software initiated shutdown

Sleep/Wakes since boot at 2021-04-26 07:37:12 +0200 :4 Dark Wake Count in this sleep cycle:0

Time stamp Domain Message Duration Delay

UUID: (null)

2021-04-26 18:52:44 +0200 Start powerd process is started

2021-04-26 18:52:44 +0200 Assertions Summary- [System: No Assertions] Using AC

2021-04-26 18:52:44 +0200 Assertions PID 83(powerd) Created ExternalMedia "com.apple.powermanagement.externalmediamounted" 00:00:00 id:0x0x800008000 [System: No Assertions]

2021-04-26 18:52:55 +0200 Assertions Kernel Idle sleep preventers: IODisplayWrangler

2021-04-26 18:54:14 +0200 Assertions PID 111(apsd) Released ApplePushServiceTask "com.apple.apsd-login" 00:01:15 id:0x0xb0000802b [System: BGTask]

2021-04-26 18:55:43 +0200 Notification Display is turned off

2021-04-26 18:55:43 +0200 Assertions PID 83(powerd) Summary ExternalMedia "com.apple.powermanagement.externalmediamounted" 00:02:58 id:0x0x800008000 [System: BGTask]

2021-04-26 18:55:43 +0200 Assertions PID 311(mds_stores) Summary BackgroundTask "com.apple.metadata.mds_stores.power" 00:02:42 id:0x0xb0000806f [System: BGTask]

2021-04-26 18:55:43 +0200 Assertions PID 98(mds) Summary BackgroundTask "com.apple.metadata.mds.power" 00:02:42 id:0x0xb0000806e [System: BGTask]

2021-04-26 18:55:57 +0200 Assertions Kernel Idle sleep preventers: -None-

2021-04-26 18:55:57 +0200 Assertions [System: BGTask]

2021-04-26 18:56:08 +0200 Assertions PID 311(mds_stores) Released BackgroundTask "com.apple.metadata.mds_stores.power" 00:03:08 id:0x0xb0000806f [System: BGTask]

2021-04-26 18:57:38 +0200 Assertions PID 311(mds_stores) Released BackgroundTask "com.apple.metadata.mds_stores.power" 00:00:10 id:0x0xb000080d6 [System: BGTask]

2021-04-26 18:57:56 +0200 Assertions PID 141(WindowServer) Created UserIsActive "com.apple.iohideventsystem.queue.tickle serviceID:100000464 name:AppleUserHIDEventSe product:2.4G Receiver eventType:3" 00:00:00 id:0x0x9000080e1 [System: DeclUser BGTask kDisp]

2021-04-26 18:57:56 +0200 Assertions Kernel Idle sleep preventers: IODisplayWrangler

2021-04-26 18:57:56 +0200 Notification Display is turned on

2021-04-26 18:58:54 +0200 ShutdownCause SMC shutdown cause: 5: Software initiated shutdown

Sleep/Wakes since boot at 2021-04-26 18:52:44 +0200 :0 Dark Wake Count in this sleep cycle:0

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i uploaded my EFI files also here :
https://drive.google.com/drive/folders/11j46noEdDD6WOcXx1QAqcKPNw_83RLif?usp=sharing
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PC Specs : HP ProDesk 600 G1 Tower

- Core i7-4770

- Radeon RX 470 (4gb)

- Ram 16gb