Windows 7 doesnt boot after upgrading RAM - Plz Help

sometimes rams from different manufacturers fail to work together; it may be due to the difference in frequency,timing etc..Its highly recommended to go for the same brand for ram upgrades.

ajai5777 said:

sometimes rams from different manufacturers fail to work together; it may be due to the difference in frequency,timing etc..Its highly recommended to go for the same brand for ram upgrades.

Click to expand...

Thnx ajai5777 for the suggestion...

But FYI...I hv bought the RAM from same manufacture i.e. ZION

One is 1GB PC800 and another is 2GB PC800...

But they don't when worked together.

Currently I m using only the 2GB module....

Pls Help !!!

Try the new sticks one at a time. First slot.

Bu some reason both the rams are not working together, you better get another 2GB Ram and sell the 1GB one

WoW..........

Sell my 1GB RAM... !!!

Can this be a Windows 7 issue....

I guess , its failing in the MEMTEST while booting...

2GB and 1GB are working fine, when placed in the Dimm1 alone
But not working when placed together...

Pls Help...

MEMTEST them using the DOS version.

Hi ALL,

Just to update you guys....below are the RAM configs for both of them...

1.0GB Single-Channel DDR2 @ 400MHz (5-5-5-18) (Old One) :

RAM - 1
Memory slots
Total memory slots 2
Used memory slots 1
Free memory slots 1
Memory
Type DDR2
Size 1024 MBytes
Channels # Single
DRAM Frequency 399.5 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 18 clocks
Command Rate (CR) 2T
Physical Memory
Memory Usage 75 %
Total Physical 0.99 GB
Available Physical 274 MB
Total Virtual 1.99 GB
Available Virtual 1.89 GB
SPD
Number Of SPD Modules 1
Slot #1
Type DDR2
Size 1024 MBytes
Manufacturer Hyundai Electronics
Max Bandwidth PC2-6400 (400 MHz)
Part Number ZION 800-1GB-A223-
Week/year 10 / 08
SPD Ext. EPP
JEDEC #3
Frequency 400.0 MHz
CAS# Latency 5.0
RAS# To CAS# 5
RAS# Precharge 5
tRAS 18
tRC 23
Voltage 1.800 V
JEDEC #2
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
JEDEC #1
Frequency 200.0 MHz
CAS# Latency 3.0
RAS# To CAS# 3
RAS# Precharge 3
tRAS 9
tRC 12
Voltage 1.800 V

------------------------------------------------------------------------

2.0GB Single-Channel DDR2 @ 400MHz (6-6-6-18) (New One)

RAM - 2
Memory slots
Total memory slots 2
Used memory slots 1
Free memory slots 1
Memory
Type DDR2
Size 2048 MBytes
Channels # Single
DRAM Frequency 399.5 MHz
CAS# Latency (CL) 6 clocks
RAS# to CAS# Delay (tRCD) 6 clocks
RAS# Precharge (tRP) 6 clocks
Cycle Time (tRAS) 18 clocks
Command Rate (CR) 2T
Physical Memory
Memory Usage 34 %
Total Physical 1.99 GB
Available Physical 1.31 GB
Total Virtual 1.99 GB
Available Virtual 1.89 GB
SPD
Number Of SPD Modules 1
Slot #1
Type DDR2
Size 2048 MBytes
Manufacturer Hyundai Electronics
Max Bandwidth PC2-6400 (400 MHz)
Part Number ZION 800-2GB-A008-
Week/year 07 / 11
SPD Ext. EPP
JEDEC #3
Frequency 400.0 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 18
tRC 24
Voltage 1.800 V
JEDEC #2
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #1
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V
-------------------------------------------------------------------------

Now from the above configs, do you guys found something different...
Pls let me know how to resolve this issue....

(5-5-5-18) & (6-6-6-18) :- These two seems to be incompatible. You should sell your 1GB as suggested & get another equivalent 2GB stick.

Else use the 2GB alone. Atleast you'll get a better performance.

Post the CPU-Z screenshots.

In addition to the possibility of the two chips being incompatible, there is also a chance that the second memory slot on the motherboard may be faulty. Try to insert the 2 GB RAM in the second slot and no ram in the first slot and see if it boots... If it boots, you can rule out this problem and purchase a second RAM which will be compatible with the new one.

Arun

asingh said:

Post the CPU-Z screenshots.

Click to expand...

Pls find the attached screenshots

sakumar79 said:

In addition to the possibility of the two chips being incompatible, there is also a chance that the second memory slot on the motherboard may be faulty. Try to insert the 2 GB RAM in the second slot and no ram in the first slot and see if it boots... If it boots, you can rule out this problem and purchase a second RAM which will be compatible with the new one.

Arun

Click to expand...

Thanks for the advice Arun.

I have chked with all kind of combination, with the RAM's and the Slots...but everything is in vain.

I tried to boot the PC from Win7 DVD...after loading the initial files(drivers) ... it gave a BSOD..."BIOS is not fully ACPI Compliant"

Kind a prob in POWER or the Win 7 Sys Drivers... !!!

rapchik4u said:

Pls find the attached screenshots

Click to expand...

Those rams can work together.

You mounted them on alternate slots right..?

asingh said:

Those rams can work together.

You mounted them on alternate slots right..?

Click to expand...

I have only 2 slots, and I have placed them side-by-side in slots.

Can anyone pls tell why that BSOD is appearing. !!??? - "BIOS is not ACPI compatible"

When this kind of Issue occurs....

I have tried Ubuntu Live DVD 10.0 and its worked fine with both the RAM's are onboard.
Only diff is, it shows 2.5GB of RAM but there was 1+2Gb of RAM.

Help me to resolve that BSOD

rapchik4u said:

Can anyone pls tell why that BSOD is appearing. !!??? - "BIOS is not ACPI compatible"

When this kind of Issue occurs....

Click to expand...

google it.

Try updating the BIOS if a new one is available.

Try testing both the RAMs on another DDR-2 mobo. If it works fine then ther is some motherboard problem. Try updating the BIOS.