My computer lenovo desktop thinkcentre beeps 1,3,3,1 i chaged the memory RAM but no effect seen it continue beeping at booting process, please help me

this PC was first sold in 2008 so can be 10 years old now.
2 slots of DDR RAM.
200pin DDR3 so says your manual. at Lenovo
1G or 2GB sticks only.
max of 4GB it states (type 7494) in your title and I am reading your service manual to you now.
what is your FUll model number with type.
what CPU do you run.
this?

Intel Core 2 Duo E8400 / 3 GHz

no source where you bought memory (store name, fleabay?)
no names brand of memory stated, nor a P/N.
no clues at all by any poster OP or hyjacked.
no memory size stated, by OP.
No statement tested them 1 by 1 , in bank 0 slot, per manual.

on the Lenovo site,
I clicked, parts, then pasted M58p-(7479)
and shows many DDR3, types.
the first one show , can be seen here.
64y:https://www.amazon.com/Lenovo-PC3-10600-...

1gbhttps://www.amazon.com/1GB-DDR3-1333-UDI...


16 chip density
if using 8 chip sticks it may fail. this PC was first sold in 2008 so can be 10 years old now. 2 slots of DDR RAM. 200pin DDR3 so says your manual. at Lenovo 1G or 2GB sticks only. max of 4GB it states (type 7494) in your title and I am reading your service manual to you now. what is your FUll model number with type. what CPU do you run. this? Intel Core 2 Duo E8400 / 3 GHz no source where you bought memory (store name, fleabay?) no names brand of memory stated, nor a P/N. no clues at all by any poster OP or hyjacked. no memory size stated, by OP. No statement tested them 1 by 1 , in bank 0 slot, per manual. on the Lenovo site, I clicked, parts, then pasted M58p-(7479) and shows many DDR3, types. the first one show , can be seen here. 64y: https://www.amazon.com/Lenovo-PC3-10600-1333MHz-57Y4390-64Y6649/dp/B004I8X0QQ 1gb https://www.amazon.com/1GB-DDR3-1333-UDIMMovo-57Y4389-64Y6648/dp/B003D1E1A8/ref=sr_1_2?s=electronics&ie=UTF8&qid=1541336608&sr=1-2&keywords=64Y6648 16 chip density if using 8 chip sticks it may fail.

PCB edge connectors. are gold plated.
Gold does not rust or corrode. ok?
so if the GOLD is dirty then just use ESD ways of safe cleaning, (professional)
Most erasers on pencils, are bad 4 ways.
1: ESD generated static, super bad idea.
2: the eraser is abrasive.
3: the dust it creates is super bad for landing in any PC,.
4: new stick warranty now void, wow !

OFF THE WIKI AND IS NO LIE.
ERASURE"
Originally made from natural rubber, but now usually from cheaper SBR, this type contains mineral fillers and an abrasive such as pumice with a plasticizer such as vegetable oil."
I'd bet you that OIL, is is too. Yah.

VOLCANIC PUMICE DUST INSIDE IS NEVER GOOD FOR GOLD. 50 angstroms thick !
what pro's use is PCB cleaners, spray cans.
if the fingers are dirty , we clean them with simple safe cleaners,
never ever use sandpaper or erasers.
Alcohol 99% or better. (oil free)
or as seen on mouser.com under PCB cleaners.

safer
just, remove the sticks.
blow the slots out with can-o-air.
then clean stick with paper cloth, and alcohol.
test the sticks 1 by 1 in bank 0 or channel "A" slot first. PCB edge connectors. are gold plated. Gold does not rust or corrode. ok? so if the GOLD is dirty then just use ESD ways of safe cleaning, (professional) Most erasers on pencils, are bad 4 ways. 1: ESD generated static, super bad idea. 2: the eraser is abrasive. 3: the dust it creates is super bad for landing in any PC,. 4: new stick warranty now void, wow ! OFF THE WIKI AND IS NO LIE. ERASURE" Originally made from natural rubber, but now usually from cheaper SBR, this type contains mineral fillers and an abrasive such as pumice with a plasticizer such as vegetable oil." I'd bet you that OIL, is is too. Yah. VOLCANIC PUMICE DUST INSIDE IS NEVER GOOD FOR GOLD. 50 angstroms thick ! what pro's use is PCB cleaners, spray cans. if the fingers are dirty , we clean them with simple safe cleaners, never ever use sandpaper or erasers. Alcohol 99% or better. (oil free) or as seen on mouser.com under PCB cleaners. safer just, remove the sticks. blow the slots out with can-o-air. then clean stick with paper cloth, and alcohol. test the sticks 1 by 1 in bank 0 or channel "A" slot first.

I did slave the memory on a differnt machine and it is n good condition,tried to swime the memory slots since it only one memory stick but no results yet I did slave the memory on a differnt machine and it is n good condition,tried to swime the memory slots since it only one memory stick but no results yet

it's the wrong memory.
learn that every PC made has a MMU.
memory manager unit. in the processor or the north bridge chip.
and all such MMU have rules or restrictions.
in this case the M58, ram must be X16 density.

8 chips 2 sides, 1 stick DDR.
if you buy modern 2018 DDR with less chips
it fails for ******* density.

testing ram on other PC, not M58 is wasted effort.
this is complex.

or OLD MMU's do not like new modern high-density chips.
buy certified, DDR for you M58, only that
and not genericl it's the wrong memory. learn that every PC made has a MMU. memory manager unit. in the processor or the north bridge chip. and all such MMU have rules or restrictions. in this case the M58, ram must be X16 density. 8 chips 2 sides, 1 stick DDR. if you buy modern 2018 DDR with less chips it fails for ******* density. testing ram on other PC, not M58 is wasted effort. this is complex. or OLD MMU's do not like new modern high-density chips. buy certified, DDR for you M58, only that and not genericl