Windows 10: While turning on laptop on dedicated graphics it shows only blank screen

I am using the lenovo Z51-70 with8 gb ramIntel i 5 5genAMD Redion R9

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Regarding Dedicated graphics

Sir please clear my confusion

• There is a program called DXDIAG when i open it and click on display it shows graphic memory 2136 mb but when i open intel graphic properties it shows dedicated video memory 128 mb so where all the left memory used.
• Is updating driver really helpful especially graphic drivers.
• How to increase dedicated memory from 128 to 512 because mylaptop contain 4 gb ram.
• When i enter BIOS i do not locate configuration tab what to do,help me to provide the advance bios mode

 

Switchable graphics, Dedicated graphics

Thank you for following up. For better assistance on switchable graphics and dedicated graphics, we would suggest that you contact the manufacturer of your graphics card.

 

Laptops with a dedicated graphics card

A friend of mine has just bought a laptop with Windows 10 and a dedicated graphics card. I am attaching a few screenshots below so that I can ask you a few questions.1. In PCs a dedicated graphics card is a totally separate piece of hardware, but what about laptops with a dedicated graphics card? Is there a separate chip altogether?2. In the two screenshots, which show a window titled "DirectX Diagnostic Tool", I see something called "Shared Memory: 4017 MB". I know this laptop has 8 GB DDR4 RAM. In my understanding 8 GB means 8192 MB. So why the shared memory is shown as 4017 MB only? Is this shared memory not system memory itself?3. One screenshot also shows "Display memory (VRAM): 2996 MB". Is this the memory of that dedicated graphics card/chip? If divided by 1024 MB it works out to about 2.92 GB.4. I need someone to explain to me as to how one can work out memory math when it comes to a laptop with a dedicated graphics card.Thanks.

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